Casing-head attachment.



E. S. MOORE & H. H. THOMAS.

CASTNG HEAD ATTACHMENT.

' APPLlCATlON FILED APR. 5.1918- Y Y 192831. Patented Oct. 15, 1918.

2 SHEETS-SHFET l.

E. S. MOORE & H. H. THOMAS.

CASING HEAD ATTACHMENT.

APPLICATION FILED APR. 5, 1918.

L2@L@ Patented (m15, 1918.

2 SHEETS-SHEET 2.

ENOCH S. MOORE AND HERBERT H. THOMAS, F PABKERSBUIRG', WIES'J.` VIRGINIA.

casING-HEAD ATTACHMENT.

To all whom t may concern.' A Be it known that we, ENOOH S. MOORE and HERBERT H. THOMAS, citizens of the United States, residing at Parkersburg, in the .county of Wood and State of West -Virginia, have invented certain new and useful Improvements inrCasing-Head Attachments, of which the following is a specication.

This invention-relates to improvements in 'well drilling appliances and it is the'principal object of the vinvention to provide a novel form of closure for casing heads wherehydrilling operations can be continued after oil or gas has been'reached and is owing, without liability of 4waste Iand to also allow the tools employedin such drilling operations to be removed" andreplaced as it becomes necessary without and the hailing line.

waste. y

Another' and equally important ob]ect of the invention is to provide a closure which can'be automatically disengaged from thecasing head upon the raising of the-tools to facilitate their removal and automatically engaged and locked in its engagement -with the casing head upon the insertion of toolsy It is also an object of the invention to provide the device with cut-ol means whereby the iow vof oil to the xcasing head vor through the same vto the outletpipes can he controlled at'will by an operator.

Other objectsv will be lin part obvious and.

in part pointed out hereinafter. i

The-invention consists, urthermorefin the novel arrangements and combinations of the j parts of the device, as well as in the details of the construction of the same, all of which will be-more fully .describedin the following specification and then finally. embodied -in the ,clauses ofthe plaim, which are appended to this specification and which` form an essential part of the same.

. "The 'invention is `clearly illustrated in the to Fig. 2,

accompanying drawings, in which:

Figure 1 is a side elevation of a casin head provided with the improved form o closure,

Fig. 2 is a vertical'section therethrough, Y Fig. 3 is; a similar view having parts in.

elevation taken` at sub ntially right-angles p 1l is a disassembled detail in perspec- Specication of Letters Patent.

Patented ct. 115, 1.918.'

VCAppneatnm mea apra 5, 191s. serial No'. gaasva.

tiveof the locking levers and the nut for locking the same, and

F ig." 5 is a detail in elevation of the con- Said casing head is formed with an annular portion or valve seat '3 having outlet openings formed in its opposite sides, which openings are screw threaded and have the usual outlet pipes .4 turned into engagement therewith. Bearing trunnions 5 and 6 are formed concentrically of the end walls of the `nection between the valve element and the seat 3 and serve to piv'otally support segmental valves 7 and 8, which valves have their respective arms provided with longitudinally disposed slots 9. Formed in cer--v tain of the adjacent marginal portions of the segmental valves 'are alined recesses 10,-

which as. will he understood, serve to receive the usual hailing line. her inaftermentioned,

acking strips 11 therethrough, -at times. are carried upon the remaining` marginalportions of said segmental valves 7' and 8 and are adapted to be engaged. ab times; irr orderA that said valves will form an ei'ectual closure for the upper portion of the casing head when the improved closure. hereinafter more fully described, is removed therefrom.'

To eEect movement of the segmental valves 7 and 8, a yoke member 12 is provided and .as will be noted, is slidably received about the bearing trunnion 6 and carries upon its opposite sides pins 13 which are adapted to be slidably enga ged in the longitudinal slots 9 formed in gi? adjace t portions of the arms ofthe se I ental va ves. To the upper end of the yoke'12 a right angularly formed arm\ 14`is engaged and as will be noted. is

passed `through a suitableform of packing gland-15 the free `end of said rod being pivotally connected to a linl 15 having connection as at 16 with an operating lever 17 mounted on one side of the casing head adjacent'the seat 3. A curved guard 18 formed with spacedseats is provided and as will be understood, serves as means for allowing the loperating lever"17 to be-locked inadjusted position with relation to the casing head. Further, a second guard 19 is secured to one-side of the casing head and arranged over a portion of the operating lever 17 in proximity to the pivotal mounting -thereof, thus, -serving as means for limiting movement ofthe same to a certain extent.

bviously, by rocking the operating lever 17 he slidable yoke 12 may be raised and low- `ed with respect to the interior of the casing head and the seat 3 and as a consequence, the segmental valves' 7 and8 engaged thereby will be moved withthe same to di-ii'erent positions, the same depending of course upon the direction of movement andthe extent of movement of the operating lever.

Receivable inthe open upper end of the casing head 1 is the improved closure 20v which as will be noted, is f ormed withradially disposed ways 21 having latches 22 slidably arranged therein, the outer ends thereof'being beveled as at 23, for a purpose which will be hereinafter apparent. Loosely` engaged in openings formed inthe rear portions of the latches 22 are the ends of bell crank levers 24. As will be noted, the `clo sure is -formed with a concentrically disposed cable receiving way or passage, which in turn has a tubular member 25 slidably arranged therein the opposite ends of which are screw threaded in order that nuts 26 and 27 can be turned into engagement with thesame. In this connection, it is to be noted thatthe upper extremity of the element 25 is reduced and has a locking nut 28 arranged thereon', which nut is formed with recesses 29 adapted, at times, to aline -with the adjacent ends of the bell crank levers 24 in order to permit free pivotal movement of the same. To facilitate rotation of the nut 'pansible coil spring 30, the upper convolu- 28, a handle member 28 may be and preferably is arranged thereon. Displacement of the lockmg nut 28 is prevented by reasonA of its engagement with the adjacent .portion of the nut 26. The lower nut 27 has engagement with the lower convolution of an extions of which have bearing upon the adjacent portlon of the closure 20. In this connection, .it is to be also understood that the nut 27 is of a `size such as yvill permit the same to be employed as a stop adapted to be engaged by the tools -or bailer arof packing gland designated .by the numeral 33 may be and preferably is provided.

drilling operations during the liowin the oil or gas or both,l the operating ever 17 is moved downwardly to cause corre-105l sponding movement of the segmental valves through the outlet pipes 4.

To prevent' the waste of oil and gas bj reason of the passage of the' cable 34 into the casing head, a ltubular member 35 1s arranged about the -sam'e and has-,connection with a suitable form of. paclnng gland 36 V70 at its upper end. Hence, oil will-be removed fromthe cable during its movement through the tubular member 35. and the gland 36.

To permit the seating of the closure 20 in the open upper endof the head 1,v the same is rabbeted as at 37 and provided with a suitable form of annular packing, while an annular groove having one wall thereof beveled is arranged in the side oi' the rabbeted portion and is adapted to be engaged by the slidable latches 22,' said groove being" indicated by the numeral738. It will be noted in this connection, that the beveled' ends 23 of the latches 22 will engage with the beveled wall of the annular groove 38 85 and as a consequence, said closure will be caused-to rmlyseat. on the annular packin arranged in the head.

through. the-way formed in the closure 20,

whereupon said closure is engaged with the open upper end of the casing head and the latch members 22 are moved outwardly due to their connection with the levers 24,'which 95 A levers will, in turn, have their free extremities engaged by the locking nut 28 carried' uponthe-upper end of the tubular member A 25, which nut is of course turned to cause disalining of the recesses 29 with the. adja- 100 cent ends of said levers 24. Should. oil orgas be reached and it' be desired -to continue 7 and 8, whichV as will be understood, move to positions about the cable 34 and the tubular member35, thereby uncovering the outlet pipes 4 and allowin the' oil orgas 'low- 1.10

ing through the casing cad topass through the outlet pipes. When the'tools are with# drawn, the same engage the nut 25, thus.

moving thetubular members 25and 31 ,upF wardly and causing the slidableH latches-22 115 to be. moved inwardly Aby reasonof. the

movement of the bell crank levers 24. With the latches thus disengagedthe closure 20 l I may be readily removed from the casi-ng head and as a consequence, the tools also'120' 'removed therefrom. -To preventjhe oil or' gas fromllowm from the easing-head upon the removal of t e closure20 therefrom; the

operating lever 17 is rocked to its uppermost'y posltlon, thereby causing the segmental valves 7 and. 8 to `move to their uppermost positions over theupper portion 'of the seatv 3, thus closing the upper end of the casing 1 and causing the oil and gas to flow n operation, the tools are inserted into Y the casing 2 and the cable 34 is passed 90' Manifestly, the constructio-n shown is capable of considerable modiiication and such modification as is within the scope of our claims, we consider Within the spirit of our invention.

lVe claim:

l. The combination with a casing head, of a closure therefor having a cable passage, slidable latch means on said closure, levers mounted on the closure having engagement with said latch means, means on the closure for locking the levers, and other means slidable about said locking means and engageable With the levers for releasing the same, at times.

2. The combination with a casing head, of a closure therefor, slidable latch members arranged on said closure, said closure having a cable passage therein, levers mounted on the closure engaged with said latch members, tubular means slidably arranged in the cable passage, means connected to the tubular means, engageable with the levers for locking the same, and other tubular means slidable on said first tubular means and engageable with the levers for releasing the same, at times.

3. The combination with a casing head having a valve seat formed therein and outlet pipes communicating therewith, of segmental valves rotatably mounted inthe head adjacent the seat provided with slotted arms, a yoke slidable in the casing having connection with said arms, and means arranged eXteriorly of the casing and connected to said yoke for operating the same.

4. The combination with a casing head having a valve seat formed therein and outlet pipes communicating therewith, of a closure for the same having a cable passage, slidable latch means on said closure, levers on the closure having engagement with said latch means, means depending from said closure for locking the levers, other means depending from the closure for releasing the levers, at times, segmental valves rotatably mounted in the casing adjacent said seat and provided with slotted arms, a yoke having connection with said slotted arms, and means arranged exteriorly of the casing and connected to said yoke for operating the same.

In testimony whereof, we aiiiX our signatures hereto.

ENOOH S. MOORE. HERBERT H. THOMAS. 

